jQuery.ajax: TypeError: Property 'xhr' of object #<Object> is not a function

Question

I have a jquery.ajax object in which I want to substitute xhr. However executing the following code gives me an error:

TypeError: Property 'xhr' of object #<Object> is not a function

The relevant code is:

    var req = jQuery.ajaxSettings.xhr();
    req.upload.addEventListener('progress', calendar.check_progress, false);

    $.ajax({
        url: script_root + '_save_file/'+id+'/'+timestamp,
        type: 'POST',
        processData: false,
        contentType: false,
        data: fd,
        xhr: req,
        success: function(data){
            do_something();
        },
        error: function(data){
            console.log(data);
            do_something_else();
        }
    });

Ajax method has no function by name xhr: req .. this is messing up your request — Sushanth --
– Sushanth --, Commented Sep 11, 2012 at 16:50

Danil Speransky · Accepted Answer · 2012-09-11 16:58:00Z

2

xhr is used in other way. See documentation: http://api.jquery.com/jQuery.ajax/

xhr: Function

Default: ActiveXObject when available (IE), the XMLHttpRequest otherwise

Callback for creating the XMLHttpRequest object. Defaults to the ActiveXObject when available (IE), the XMLHttpRequest otherwise. Override to provide your own implementation for XMLHttpRequest or enhancements to the factory.

May be you're looking for something like

xhr: function() {
    var xhr = $.ajaxSettings.xhr();
    xhr.upload.addEventListener('progress', calendar.check_progress, false);
    return myXhr;
},

edited Sep 11, 2012 at 16:58

answered Sep 11, 2012 at 16:51

Danil Speransky

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1 Comment

informatik01 Over a year ago

Shouldn't it be var myXhr = $.ajaxSettings.xhr();? Seems to be a typo.

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